/*
 * Copyright 2012 Marsrutai.lt
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package lt.marsrutai.mobile.android.task;

import lt.marsrutai.mobile.android.AppContext;
import lt.marsrutai.mobile.android.R;
import lt.marsrutai.mobile.android.activity.intent.TaskIntentHolder;
import android.content.Intent;
import android.location.Location;

/**
 * Background task which fetches current location.
 * 
 * @author Justas
 */
public class GetLocationTask extends NotifyingAsyncTask<Void, Void, Location> {
    
    public static final int RESULT_LOCATION_NOT_RESOLVED = 10;
    public static final String BROADCAST_ACTION = "lt.marsrutai.mobile.android.task.location";

    private int errorMessageId;

    protected Location doInBackground(Void... params) {
        Location location = null;
        
        if (AppContext.getLocationProvider().isReceivingUpdates()) {
            while (location == null) {
                location = AppContext.getLocationProvider().getCurrentBestLocation();
                try {
                    Thread.sleep(500);
                }
                catch (InterruptedException e) {
                }

                if (isCancelled())
                    break;
            }
        }
        else {
            setResultStatus(RESULT_LOCATION_NOT_RESOLVED);
            errorMessageId = R.string.stop_search_location_services_turned_off;
        }

        return location;
    }
    
    @Override
    protected Intent getResultIntent(Location result) {
        TaskIntentHolder intentHolder = new TaskIntentHolder(super.getResultIntent(result));
        intentHolder.setResultMessage(errorMessageId);
        intentHolder.setResult(result);
        return intentHolder.getIntent();
    }

    @Override
    protected String getBroadcastAction() {
        return BROADCAST_ACTION;
    }

}
